/*
 * Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.scenario.effect;

/**
 *
 */
public class FilterContext {

    private Object referent;

    protected FilterContext(Object referent) {
        if (referent == null) {
            throw new IllegalArgumentException("Referent must be non-null");
        }
        this.referent = referent;
    }

    public final Object getReferent() {
        return referent;
    }

    @Override
    public int hashCode() {
        return referent.hashCode();
    }

    @Override
    public boolean equals(Object o) {
        if (!(o instanceof FilterContext)) {
            return false;
        }
        FilterContext that = (FilterContext)o;
        return referent.equals(that.referent);
    }
}
